Application Study Of DSP In System Of Rapid North-seeking And Orientation Measure

The system of Rapid North-Seeking and Orientation-Measuring works with inertial principle. Its function is to obtain the azimuth angle with respect to geographic north and local latitude through north-seeking measure under the condition of the carrier staying at static state so that aligning orientation. The Rapid North-Seeking and Orientation-Measuring system is a kind of self-contained and independent position indicating system without relying on any outside information. It can not be interfered by the environment such as magnetic field. It behaved premium properties under the condition of either high or low temperature. The system can fast determine geographic north precisely under all-day environment, and is suitable for the high mobile field operation environment especially.The thesis first analyse the theory of the system, designed a mathematical model of un-mended system, and simplified the system parameter, obtained a standard control object, designed Fuzzy-PID controller and simulated the control object subsequently .The results of simulation show that the inertial platform stabilizing circuits can be designed with high response speed, strong anti-jamming and high accuracy. Compared with the classical PID control, and fuzzy control, the Fuzzy-PID controller designed here performances much better.In the thesis, the software and hardware of north-seeker system are designed.Formerly north seeker systems use the PC104 microprocessors, Device for high power consumption , big volume,low integration,circuit complexity,low reliability,and sole interface mode, it are unable to meet the demand of north seeker for small size, high-precision and real-time.The thesis uses TMS320C6713 chip to construct the computer platform for the Rapid North-Seeking and Orientation-Measuring system. TMS320C6713,the DSP, as an special digital signal processor,has high operation speed and precision, and it make the operation of complicated mathematics in north-seeking system more easy with all these advantages.Using C6713 as the core, this project designed and debugged the hardware and software consisting of data collection, processing and output, the communication. The north-seeking and Orientation-Measuring function is realized.